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5ff98fb239
- Fix a side channel vulnerability in modular exponentiation that could
reveal an RSA private key used in a secure enclave.
- Fix side channel in mbedtls_ecp_check_pub_priv() and
mbedtls_pk_parse_key() / mbedtls_pk_parse_keyfile() (when loading a
private key that didn't include the uncompressed public key), as well
as mbedtls_ecp_mul() / mbedtls_ecp_mul_restartable() when called with
a NULL f_rng argument. An attacker with access to precise enough
timing and memory access information (typically an untrusted operating
system attacking a secure enclave) could fully recover the ECC private
key.
- Fix issue in Lucky 13 counter-measure that could make it ineffective
when hardware accelerators were used (using one of the
MBEDTLS_SHAxxx_ALT macros). This would cause the original Lucky 13
attack to be possible in those configurations, allowing an active
network attacker to recover plaintext after repeated timing
measurements under some conditions.
https://tls.mbed.org/tech-updates/security-advisories/mbedtls-security-advisory-2020-07
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Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
(cherry picked from commit 7f79bb5cfd)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
Buildroot is a simple, efficient and easy-to-use tool to generate embedded Linux systems through cross-compilation. The documentation can be found in docs/manual. You can generate a text document with 'make manual-text' and read output/docs/manual/manual.text. Online documentation can be found at http://buildroot.org/docs.html To build and use the buildroot stuff, do the following: 1) run 'make menuconfig' 2) select the target architecture and the packages you wish to compile 3) run 'make' 4) wait while it compiles 5) find the kernel, bootloader, root filesystem, etc. in output/images You do not need to be root to build or run buildroot. Have fun! Buildroot comes with a basic configuration for a number of boards. Run 'make list-defconfigs' to view the list of provided configurations. Please feed suggestions, bug reports, insults, and bribes back to the buildroot mailing list: buildroot@buildroot.org You can also find us on #buildroot on Freenode IRC. If you would like to contribute patches, please read https://buildroot.org/manual.html#submitting-patches